Ein Unmöglicher Lehrer plot
Robby's (Sebastian Koch) brother Ernst (Heino Ferch) graduates to become a high school teacher while working as a waiter, driving a taxi and tutoring during the same studies. He notices that teaching is going well for him, despite the fact that the study is not going smoothly. When his brother falls head over heels in love with a New Zealand beauty, Robby assumes his identity and secures a permanent position at a school. Out of fear of discovery, he repeatedly renders hand-and-crank services to whoever asks for it, while he himself has almost nothing to do anymore.